Mechanics

SATURN L100 BLACK SMOKE PROBLEM

2001 Saturn L100 • 142,000 miles

The code reader gives a P0171 (blank on Bay1) code and both the AC and rad fans switch on, the car is running very high on gas and a black smoke, all started after it was in the workshop and the mechanic welded the exhaust manifold (that had a small crack). Already changed the temperature gauge and the FCM and no change. Please advise where to start, Can it be a bad sensor causing the problem?
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Tor_saturn_L100
February 14, 2013.




You have the 4cyl engine?The first thing I would do is check for a vacuum leak.

Saturntech9
Feb 15, 2013.


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